C8279 Datasheet, PDF (2/4 Pages) List of Unclassifed Manufacturers – Programmable Keyboard Display Interface Megafunction

Symbol
C8279 Megafunction Datasheet
CLK
RESET
A0
CSN
WRN
RDN
RL[7:0]
SHIFT
DB_OUT[7:0]
SL[3:0]
IRQ
DBN
OUTA[3:0]
OUTB[3:0]
CNTLSTB
DB_IN[7:0]
C8279
Pin Description
Name
CLK
RESET
CSN
A0
RDN
WRN
RL[7:0]
SHIFT
CNTSTB
DB_IN[7:0]
DB_OUT[7:0]
PDBTRI
IRQ
SL[3:0]
OUTA[3:0]
OUTB[3:0]
BDN
Type
In
In
In
In
In
In
In
In
In
In
Out
Out
Out
Out
Out
Out
Out
Polarity
Rising
High
Low
-
Low
Low
-
-
-
-
-
Low
-
-
-
-
Low
Description
Clock
Reset
Chip Select
Buffer Address
Input/Output Read
Input/Output Write
Return Lines
Shift Input Status
Control/Strobed Input Mode
Data Bus (input side)
Data Bus (output side)
Tri-State signal for DB_OUT
Interrupt Request
Scan Lines
Outputs A for 16x4 display refresh registers
Outputs B for 16x4 display refresh registers
Blank Display
CAST, Inc.
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